US3920422A - Pollution control apparatus and method - Google Patents

Pollution control apparatus and method Download PDF

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Publication number
US3920422A
US3920422A US252914A US25291472A US3920422A US 3920422 A US3920422 A US 3920422A US 252914 A US252914 A US 252914A US 25291472 A US25291472 A US 25291472A US 3920422 A US3920422 A US 3920422A
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United States
Prior art keywords
nozzle
gas
outlet
gas stream
entry
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Expired - Lifetime
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US252914A
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English (en)
Inventor
Ladislav J Pircon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PIRCON DOLORES R TRUSTEE DOLORES R PIRCON STOCK AND PATENT TRUST UNDER DECLARATION OF TRUST DATED JUNE 26 1990
Purity Corp
Original Assignee
Purity Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US00190248A external-priority patent/US3853506A/en
Application filed by Purity Corp filed Critical Purity Corp
Priority to US252914A priority Critical patent/US3920422A/en
Priority to IE1074/72A priority patent/IE36802B1/xx
Priority to GB3880772A priority patent/GB1408046A/en
Priority to DE2243957A priority patent/DE2243957A1/de
Priority to DD165811A priority patent/DD101819A5/xx
Priority to CH1401172A priority patent/CH540711A/de
Priority to NL7213028A priority patent/NL7213028A/xx
Priority to AU47209/72A priority patent/AU4720972A/en
Priority to ZA726692A priority patent/ZA726692B/xx
Priority to IL40564A priority patent/IL40564A0/xx
Priority to FR7236449A priority patent/FR2183648B1/fr
Priority to BE790079D priority patent/BE790079A/xx
Priority to IT53397/72A priority patent/IT966356B/it
Priority to AR244667A priority patent/AR193902A1/es
Priority to JP47103682A priority patent/JPS5761443B2/ja
Priority to US05/467,083 priority patent/US3957465A/en
Priority to US05/632,648 priority patent/US4036609A/en
Application granted granted Critical
Publication of US3920422A publication Critical patent/US3920422A/en
Priority to US06/845,614 priority patent/US4744958A/en
Assigned to PIRCON, DOLORES R. reassignment PIRCON, DOLORES R. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LADISLAV, J. PIRCON, DECEASED
Assigned to PIRCON, DOLORES R., EXECUTOR TO THE ESTATE OF PIRON, LADISLAV, DEC'D. reassignment PIRCON, DOLORES R., EXECUTOR TO THE ESTATE OF PIRON, LADISLAV, DEC'D. LETTERS OF TESTAMENTARY (SEE DOCUMENT FOR DETAILS). Assignors: PIRCON, LADISLAV, DEC'D.
Assigned to PIRCON, DOLORES R., TRUSTEE, DOLORES R. PIRCON STOCK AND PATENT TRUST UNDER DECLARATION OF TRUST DATED JUNE 26, 1990 reassignment PIRCON, DOLORES R., TRUSTEE, DOLORES R. PIRCON STOCK AND PATENT TRUST UNDER DECLARATION OF TRUST DATED JUNE 26, 1990 ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: PIRCON, DOLORES R.
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/22—Stationary reactors having moving elements inside in the form of endless belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
    • B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2221/00—Applications of separation devices
    • B01D2221/02—Small separation devices for domestic application, e.g. for canteens, industrial kitchen, washing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00121—Controlling the temperature by direct heating or cooling

Definitions

  • ABSTRACT Apparatus operating at low pressure drop and low initial velocity for removing pollutants down to submicron sizes from gas streams comprising a nozzle means accelerating the gas flow to about four times its entering velocity into a large expansion chamber having an impinger area for removal of pollutants. This is amethod of removing pollutants down to sub-micron size at high efficiency by passing the polluted gas through a nozzle having specific geometry into an expansion chamber and impinging the pollutants upon an impinging area and removing them from the systern.
  • Electrostatic precipitators have also been utilized but these present disadvantages of high power, consumption, expensive maintenance, high voltage and explosion hazards, corrosion problems due to necessary materials of construction, and cannot be used with gases containing high amounts of moisture.
  • Venturi gas scrubbers have also been used in attempts to obtain satisfactory industrial pollution control. It is generally recognized in the use of Venturi gas scrubbers that high gas flow velocities are necessary to obtain most effective gas flow results. However when the velocity through theVenturi reaches about 650 feet per second, the pressure drop through the Venturi becomes so substantial that an increase in velocity beyond that is impractical. Even at the conventional velocities used, the Venturi section introduces a large pressure drop, in the order of to 30 inches of water, resulting in large power consumption to maintain flow through the cleaning apparatus. Further, as speed of flow through the Venturi apparatus is increase, the greater is the tendency for particles to disintegrate into smaller sizes, thereby increasing the small-sized particles passing out of the effluent stack.
  • an object of the present invention 'is'to. provide anapparat'us for removal of pollutants from-a gas stream which is highlyefficient and useful in'awide variety of applications.
  • a more general object of the invention is to provide an apparatus for removing pollutants from a gas stream which has a low pressure drop across the apparatus.
  • Another objecto'f-the invention is to provide an apparatus which is continuous in its operation and has a low gas velocity while'removing sub-micron particles from a gas stream with high efficiency.
  • Still another object of the invention is to provide an apparatus which is self-cleaning and rion-cloggingl
  • An object of this invention is to provide an apparatus and method for removing noxious odors and chemically reacting particles in polluted gas streams.
  • Another object of the invention is to provide an apparatus and method for re'm'ovding particulates from high temperature gas streams.
  • a further object of the invention' is to provide an apparatus and method for agglomerating particles in gas streams which is efficient in both wet tions.
  • Another object is to provide a method having high efficiency for removing pollutants down to submicron sizes from gas streams.
  • FIG. 1 shows a diagrammatic view of one embodiment of an apparatus of this invention
  • FIG. 2 shows another embodiment of an apparatus of this invention using five nozzles
  • FIG. 3 shows another embodiment of an apparatus of this invention wherein the impingement surface is a fixed surface.
  • FIG. 4 shows a diagrammatic view of an embodiment of an apparatus of this invention wherein the nozzle is directed into a cyclone scrubber which acts as the impingement surface; 7
  • FIG. 5 shows a diagrammatic view of an embodiment of an apparatus of this invention wherein the nozzle is directed toward a drum granulator which acts as the impinging surface;
  • FIG. 6 shows an embodiment of an apparatus of this invention wherein the nozzle is directed into a pan granulator which acts as the impinging surface.
  • Apparatus 10 comprises a main work vessel or expansion chamber 12 and impingement surface in the form of an endless travelling belt 14 which is fabricated from a flexible, substantially imperforate material such as imperforate metal belts, rubber belting, and tightly woven cloth fabric.
  • Chamber 12 is provided with holding means 48 which supports nozzle 46 in a generally horizontal position with entry 45 in communication with gas delivery conduit 18.
  • Nozzle 46 has outlet 47 in communication with chamber 12.
  • Chamber 12 also is arranged with gas stream outlet 20 which, in the illustrated embodiment, is located vertically above and generally horizontally opposite nozzle outlet 47.
  • Chamber 12 has pollutant discharge opening 22 which is maintained in air-tight relationship by being submerged beneath the liquid contained in holding tank 24.
  • the liquid in tank 24 being commonly a dilute water solution of the pollutants being removed from the gas stream.
  • the endless travelling belt 14 is trained over a lower and dry opera- -idler roller 26 and an upper companion roller 28 which is driven from a suitably energized, motor 30, the rollers 26 and 28 being generally-vertically aligned spanning nozzle outlet 47 so that portion 32 of belt 14 confronts the gas stream from the nozzle outlet in impingeable relationship with the gases passing through the-nozzle.
  • Lower idler roller 26 is free to move'upward to permit desired concavity in the belt, but is retained against an upper stop to prevent undue distortion of the belt and contact with frictional wear between the opposite runs of the belt due to high velocity gas streams.
  • Belt 14 is driven in the direction of arrows 36,'running from the driven roller 28, past the impingement region and toward the roller 26, in a generally downward direction past the gas stream inlet 16.
  • a skimmer or scraper element 38 may be disposed generally between the impingement section and roller 26 and is swingably mounted on a pivot rod 40 to be urged into cleaning contact with the surface of the travelling belt by means of a counterweight 42 which is adjustably mounted on an arm 44 in order to regulate the cleaning pressure which is applied by skimmer 38 to the surface of the belt.
  • Scraper element 38 may be held against the surface of the belt by any suitable means, such as a spring.
  • Conduit 18 is connected to the exhaust from a pollution source such as a furnace, grinding, crushing, or other size reduction equipment or spray drying of milk or other such liquids, the effluent of casting operations or the like.
  • Input conduit 18 may be connected to any pollution-containing gas source.
  • the polluted air and- /or other gases are fed into conduit 18 under a certain velocity by means of a blower or other like device, not shown, or may be sucked through the apparatus by an exhaust blower in the exhaust stack of the apparatus.
  • nozzle 46 is mounted in the gas stream inlet of chamber 12 by means of support plate 48. Nozzle 46 will be more fully described below. It is sufficient here to say that nozzle 46 serves to agglomerate the pollutants of the gas stream.
  • Particulate agglomeration may be further enhanced by spraying liquid into the gas stream in advance of nozzle 46 through spray 50 situated generally in the delivery conduit 18 as shown. Liquid is forced through the spray device 50 by means ofa pump. Enhanced pollution removal may also be achieved by supplying suitable quantities of liquid to the endless belt 14 in advance of the impingement section 32. Spray 56 is located to direct a spray of suitable liquid over the outer surface of belt 14 as the belt passes over the driven roller 28. The liquid in tank 24 may also serve as the supply, for liquid being delivered by the spray device 56.
  • a third spray device 58 is advantageously directed toward the pollutant discharge opening 22 in order to contact and moisten solids which have been scraped from the outer surface of the travelling belt by the skimmer 38.
  • Pump 52 circulates liquid from tank 24 through spray 58. It is usually preferred that fresh liquid be supplied to spray 50. In many instances the liquid from tank 24 may be used in both spray devices 56 and 58, and sometimes even in spray device 50. For such modifications, the necessary piping is readily apparent.
  • the apparatus of my invention also works'satisfactorily in many instances without the use of any water and in such cases the pollutant discharge opening 22 is closed by a suitable mechanical device permitting solids to pass from expansion chamber 12 to a collecting chamber without release of pressure.
  • An auxiliary cleaning arrangement comprising a rotary brush 60 may be disposed in contact with the outer surface of the travelling belt 14 beyond the region of gas impingement in the direction of belt travel, being advantageously situated generally opposite the skimmer 38 and rotated generally into the direction of belt travel as indicated by the arrow 62.
  • Tower eliminator unit 64 is connected to the gas stream outlet 20 of the expansion chamber 12, the tower eliminator unit 64 providing a deflected exhaust gas pathway and being advantageously fastened to the chamber 12 by cooperating flanges 66 and 68.
  • the tower eliminator arrangement shown is particularly adapted to remove fine droplets of liquid remaining in the gas stream together with any solids or gases trapped by such droplets.
  • the tower eliminator arrangement includes a first generally horizontal section 70, a subsequent, generally vertical section 72, a further horizontal section 74, a succeeding vertical section '76 and a final horizontal section 78.
  • the several offset sections of the tower eliminator arrangement 64 provide a tortuous escape path for the exhaust gases to maximize the opportunity for mist elimination.
  • a sequence of baffles 80 are situated in the individual eliminator sections at the respective downstream ends thereof so as to insure entrapment of liquid droplets.
  • Gravity drains 82 are provided in the tower eliminator arrangement 64 to drain accumulated liquids from the tower eliminator to beneath the surface of the liquid in tank 24.
  • Orifice plates 84 and 86 are provided to modify the velocity of the effluent gases.
  • any suitable device for removing undesired liquid droplets may be connected to gas stream outlet 20 of expansion chamber 12.
  • only one trapping section may be desired, while for other applications, it may be desired to connect gas stream outlet 20 directly to an effluent stack.
  • Nozzle 46 is an important feature of my invention. I
  • the apparatus of my invention has a large expansion volume into which the gas stream passes from the exit of the nozzle.
  • the apparatus of my invention operates at about 0.4 m8 inches of water pressure drop throughout the entire apparatus-In the apparatus of my invention it is desired that the entry velocity of the gas be low.
  • the velocity of gases in effluent stacks is controlled by governmental codes in order to retain the particulate matter in suspension.
  • the entry velocities for gases in the apparatus of my invention may be at the low range of velocities generally permitted by governmental codes.
  • the gas containing particulates is passed through anozzle means such as 46 in FIG. I having an entry at one end portion (45) and an outlet at theother end portion (47) wherein the crosssectional area of the entry to the nozzle is about 2 to 12 times the effective cross-sectional area of the outlet area of the nozzle.
  • effective cross-sectional area I mean the area at 90 to the axis of gas flow. It is preferred that the entry to the nozzle have a cross-sectional area about 3 to 5 times the cross-sectional area of the outlet of the nozzle.
  • the length of the converging portion of the nozzle is determined by the angle of convergence shown as A in FIG. I. It is preferred that the mean angle of convergence be about 4 to 8, about 5.5 to 6.5 being preferred.
  • I mean as measured on the line drawn from the entry to the outlet. It is preferred that the entry be round and the nozzle conical, but other symmetrical geometrical shapes are satisfactory. I have found it suitable for the size of the outlet to be about 0.5 to 0.7 times the distance from the outlet to the impingement means, about 0.6 times being preferred.
  • the particulate-containing gas is accelerated in nozzle 46 due to outlet 47 being of smaller cross-sectional area than entry 45. As pointed out above, the gas is accelerated to a velocity at outlet 47 of about 2 to I2 times its velocity at entry 45. Upon passing from outlet 47 to expansion chamber 12, the gas expands rapidly, thereby quickly reducing its velocity. The distance from outlet 47 to an impingement means such as belt 14 must be such that a large portion of the particulate matter in the gas reaches impingement area 34 at the much reduced gas velocity.
  • the high efficiency of the apparatus and process of my invention is due to the differential velocity, differential acceleration and differential deceleration of different-sized particles in the gas stream.
  • the interplay of differing forces and differentsized particles caused by the geometry of the gas acceleration in the nozzle and decleration in the large expansion volume causes extremely high particle collision resulting in very high agglomeration
  • smaller submicron particles are more efficiently agglomerated by'the apparatus of my invention than larger-sized particles.
  • theapparatus of my inven tion may be operated with a wide variety of impinge- 6 face ofthe impingement means be provided with means for substantially continuously removing particulate matter from that surface. It is to be understood that impingement means includes fluid and gaseous flows which the particulatecontaining gas stream may impinge upon.
  • FIG. 3 shows nozzle 46 directed so that the gases and particulate matter from outlet 47 are directed to a concave impingement surface formed by plate 8. It is to be understood that spray 56 is not necessary to the functioning of the apparatus of my invention but utilization of spray 56 does increase the efficiency of removal of pollutants from the stack gas. Spray 56 may also spray the expansion zone between the nozzle outlet and the impingement means.
  • FIG. 4 shows an apparatus of my invention wherein the nozzle is directed to an impingement means formed by a conventional cyclonic scrubber wherein the nozzle effluent and the water are introduced tangentially therefore causing a vigorous scrubbing within the vessel.
  • the water together with the particulate matter is removed at the bottom of the vessel while the clean gases exit from the top of the vessel.
  • FIG. 5 schematically illustrates an embodiment of my invention wherein the nozzle is directed to an impingement means comprising a standard drum granulator.
  • FIG. 6 shows an embodiment of my invention wherein the nozzle is directed toward an impingement means comprising a standard pan granulator.
  • the impingement means may be any surface or liquid configuration lomisting configurations have been more fully described ment means and without water sprays. In such instances, only the materials of construction are the limiting factor on the temperatures of the incoming gases.
  • the introduced gas should be below'the temperature at which the droplets will flash to steam, that is, about 212F., unless the size of the droplet or water temperature is used to compensate for the effect of vaporization.
  • Multiple nozzles may be connected to a gasstream as shown diagrammatically in FIG. 2 so long as the gases from the outlets of the nozzles impinge upon a suitable impingement surface.
  • Suitable impingement means need not be moving belts such as shown in FIG. I, but may comprise a wide variety of suitable surfaces as shown in FIGS. 3, 4, 5
  • the desirable factors for the impingement means are that of sufficient size and distance from nozzle outlet 47 to permit substantially all of the particulate matter in the gas stream passing through the expansion zone from outlet 47 to reach its surface. Distances I have found to be satisfactory have been set forth above. It is also desired, but not necessary, that the surabove, any suitable means for removing the clarified gas from the expansion zone is satisfactory dependent upon stack effluent requirements.
  • the process of my invention for removing particulate matter from gas streams comprises passing said particulate-containing gas stream through the entry of a nozzle at velocities of about 15 to feet per second, accelerating the gas stream through a converging portion of the nozzle to about 2 to 12 times the entrance velocity, passing the particulate-containing gas stream from the exit of the nozzle to a large expansion zone decelerating the gas, causing impingement of substantially all particulate matter entrained in the gas stream on an impingement means, removing particulate matter from the expansion zone, and removing the clarified gas 7 stream from the expansion zone.
  • EXAMPLE I An apparatus, as shown in FIG. 1, was used to remove quarry dust from a gas stream.
  • the apparatus used a nozzle 12 inches diameter at the input and 6 inches diameter at the exit with the angle of convergence of approximately 6 as shown in the apparatus illustrated in FIG. 1.
  • the exit of the nozzle was 10 inches from the impingement area of the belt.
  • the dust was fed into the system, at a constant rate, by means of a screw feeder which conveyed dust from a storage hopper to a tube which discharged in the stack leading to the nozzle input.
  • the gas containing dust was passed through the nozzle under conditions shown in Table I using the dust loading indicated.
  • the velocity was determined by using a Dwyer Air Velocity Meter No. 400.
  • the gas entering the sampling tube was drawn through the tube at the same velocity as the gas passing the tube inlet in order to establish isokinetic conditions. After each test run, the collection cups were removed and weighed on an analytical balance to the nearest tenth of a milligram. From such measurements the weight per cent of feed solids removed was determined.
  • the apparatus was operated with water sprays in the amount indicated in Table I.
  • the pressure drop across the entire apparatus was ascertained by connecting one side of a water manometer to the stack leading to the nozzle and the other side to the effluent stack from the Average Dust Loading TABLE III I Test Groups I II III IV V 2.0 2.0 2.5 2.5 2.5 0.75 0.75 1.9 1.9 1.9 2.30 2.69 2.54 21.8 22.0 785 785 I200 945 945 TABLE IV SIZE DISTRIBUTION OF FERTILIZER DUST ADDED IN RUNS SHOWN IN TABLE 111 Percentage Retained on Screen U.S. Standard Test Groups Mesh Sieves I II III IV & V
  • EXAMPLE III The same apparatus as described in Example I was used for removal of fly ash from air streams. The apparatus was operated under conditions shown in Table V with the fly ash added in the size distribution shown in Table VI. A study of the effectiveness of removal of micron and submicron particles according to operation as set forth in Table V is shown in Table VI.
  • the water rate through the spray in the nozzle input was 0.416 gallons per minute.
  • the belt speed was 65 linear feet per minute.
  • EXAMPLE IV The same apparatus as described in Example I was used for removal of iron oxide from air streams. The apparatus was operated under conditions shown in Table Vll with the iron-oxide added in the size distribution shown in Table Vlll. A study of the effectiveness of removal of micron and submicron particles according to operation as set forth in Table Vll is shown in Table VIII.
  • the water rate through thespray in the nozzle input was 0.04l6 gallons per minute.
  • the belt speed was 65 linear feet per' minute.
  • this invention containing gas stream from the nozzle outlet through an expansion zone decelerating the gas, said acceleration and deceleration of the gas stream causing particulates to agglomerate; impinging said agglomerates and particulates upon an impingement means of a fixed concave imperforate surface having a water stream provided across said surface, thereby separating said particulates and agglomerates from said gas stream, said nozzle outlet having a diameter about 0.5 to 0.7 times the distance from said outlet to saidimpingement means; removing said particulates and agglomerates from the expansion zone; and separately removing clarified gas from the expansion zone.
  • a process having a pressure drop' of about 0.4 :08 inches of water for removing particulate matter from pollutant containing industrial effluvia gas streams comprising passing said gas stream having particulate 'matter therein through the entry of a nozzle; accelerat ing the gas stream through a converging portion of said nozzle having a mean angle of convergence of about 40 to 8 providing outlet velocities of about 2 to 12 times the entrance velocity; passing said particulate- 3.
  • said outlet velocity is about 3 to 5 times the entrance velocity.
  • liquid spray is introduced to said gas stream having particulate matter therein, prior to entry of a nozzle.
  • impingement means of a fixed concave imperforate surface having a water stream provided across said surface in said expansion zone opposite said'nozzle outlet at a distance from said outlet to insure impingement thereon of substantially all particulate matter entrained in the gas stream passing from said nozzle outlet after expansion of the gas stream in said chamber reducing the gas velocity, said nozzle outlet having a diameter about 0.5 to 0.7 times said distance from said outlet to said impingement means;

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Separation Of Particles Using Liquids (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
US252914A 1971-10-18 1972-05-12 Pollution control apparatus and method Expired - Lifetime US3920422A (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
US252914A US3920422A (en) 1971-10-18 1972-05-12 Pollution control apparatus and method
IE1074/72A IE36802B1 (en) 1971-10-18 1972-08-01 Pollution control apparatus and process
GB3880772A GB1408046A (en) 1971-10-18 1972-08-21 Pollution control apparatus and method
DE2243957A DE2243957A1 (de) 1971-10-18 1972-09-07 Verfahren und vorrichtung zum abscheiden von verunreinigungen aus stroemenden gasen
DD165811A DD101819A5 (enrdf_load_stackoverflow) 1971-10-18 1972-09-22
CH1401172A CH540711A (de) 1971-10-18 1972-09-26 Verfahren und Vorrichtung zum Abscheiden von Verunreinigungen aus strömenden Gasen
NL7213028A NL7213028A (enrdf_load_stackoverflow) 1971-10-18 1972-09-27
AU47209/72A AU4720972A (en) 1971-10-18 1972-09-28 Pollution control apparauts
ZA726692A ZA726692B (en) 1972-05-12 1972-09-29 Pollution control apparatus and method
IL40564A IL40564A0 (en) 1971-10-18 1972-10-12 Apparatus for removing particulate matter from gas streams
FR7236449A FR2183648B1 (enrdf_load_stackoverflow) 1971-10-18 1972-10-13
BE790079D BE790079A (fr) 1971-10-18 1972-10-13 Procede et appareil pour l'extration de particules d'un courantde gaz
IT53397/72A IT966356B (it) 1971-10-18 1972-10-16 Apparecchio e procedimento per rimuovere materia in particelle da correnti di gas
AR244667A AR193902A1 (es) 1971-10-18 1972-10-17 Metodo y aparato para eliminar material en particulas de corrientes gaseosas
JP47103682A JPS5761443B2 (enrdf_load_stackoverflow) 1971-10-18 1972-10-18
US05/467,083 US3957465A (en) 1972-05-12 1974-05-06 Pollution control apparatus and method
US05/632,648 US4036609A (en) 1971-10-18 1975-11-17 Endless belt impingement apparatus and method
US06/845,614 US4744958A (en) 1972-05-12 1986-03-28 Heterogeneous reactor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00190248A US3853506A (en) 1971-10-18 1971-10-18 Pollution control apparatus and method
US252914A US3920422A (en) 1971-10-18 1972-05-12 Pollution control apparatus and method

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US00190248A Continuation-In-Part US3853506A (en) 1971-10-18 1971-10-18 Pollution control apparatus and method

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US05/467,083 Continuation-In-Part US3957465A (en) 1972-05-12 1974-05-06 Pollution control apparatus and method
US05/632,648 Continuation-In-Part US4036609A (en) 1971-10-18 1975-11-17 Endless belt impingement apparatus and method

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US3920422A true US3920422A (en) 1975-11-18

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US252914A Expired - Lifetime US3920422A (en) 1971-10-18 1972-05-12 Pollution control apparatus and method

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US (1) US3920422A (enrdf_load_stackoverflow)
JP (1) JPS5761443B2 (enrdf_load_stackoverflow)
AR (1) AR193902A1 (enrdf_load_stackoverflow)
AU (1) AU4720972A (enrdf_load_stackoverflow)
BE (1) BE790079A (enrdf_load_stackoverflow)
CH (1) CH540711A (enrdf_load_stackoverflow)
DD (1) DD101819A5 (enrdf_load_stackoverflow)
DE (1) DE2243957A1 (enrdf_load_stackoverflow)
FR (1) FR2183648B1 (enrdf_load_stackoverflow)
GB (1) GB1408046A (enrdf_load_stackoverflow)
IE (1) IE36802B1 (enrdf_load_stackoverflow)
IL (1) IL40564A0 (enrdf_load_stackoverflow)
IT (1) IT966356B (enrdf_load_stackoverflow)
NL (1) NL7213028A (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036609A (en) * 1971-10-18 1977-07-19 Pircon Ladislav J Endless belt impingement apparatus and method
US4087264A (en) * 1974-02-28 1978-05-02 Riggs & Lombard, Inc. Method and apparatus for web treatment
US4120670A (en) * 1975-11-17 1978-10-17 Pircon Ladislav J Pollution control apparatus and method
US4209502A (en) * 1974-05-06 1980-06-24 Pircon Ladislav J Heterogeneous process
US4229189A (en) * 1978-10-17 1980-10-21 Pircon Ladislav J Pollution control apparatus and method
US4358433A (en) * 1976-04-16 1982-11-09 Pircon Ladislav J Heterogeneous process
US4468962A (en) * 1982-03-05 1984-09-04 Armstrong International, Inc. Energy loss detection system
US4744958A (en) * 1972-05-12 1988-05-17 Pircon Ladislav J Heterogeneous reactor
US4801437A (en) * 1985-12-04 1989-01-31 Japan Oxygen Co., Ltd. Process for treating combustible exhaust gases containing silane and the like
US4952221A (en) * 1988-04-21 1990-08-28 Taikisha Ltd. Gas cleaning apparatus containing a centrifugal type paint mist separator
US5902385A (en) * 1997-06-23 1999-05-11 Skc, Inc. Swirling aerosol collector
US5904752A (en) * 1997-06-23 1999-05-18 Skc, Inc. Method for collecting airborne particles and microorganisms by their injection into a swirling air flow
US6439027B1 (en) * 2000-08-10 2002-08-27 Rupprecht & Patashnick Company, Inc. Particulate mass measurement apparatus with real-time moisture monitor
US20080063558A1 (en) * 2004-09-10 2008-03-13 Malcolm Coleman Odour Reduction Apparatus
CN102269010A (zh) * 2011-07-14 2011-12-07 江都市引江矿业设备有限公司 煤矿井下用钻孔排渣除尘器
CN107854945A (zh) * 2017-12-05 2018-03-30 中国华电科工集团有限公司 一种烟气净化系统

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DE3020549A1 (de) * 1980-05-30 1981-12-10 Hölter, Heinz, Ing.(grad.), 4390 Gladbeck Trockenstaubaustrag, vorzugsweise fuer bergbaufilter in verbindung mit einer nassagglomerationspumpenvorrichtung
GB2122105A (en) * 1982-06-16 1984-01-11 Coopers Filters Ltd Water-gas separator
JPS59103157U (ja) * 1982-12-28 1984-07-11 株式会社ノーリツ 湯沸器
JPS63221822A (ja) * 1987-03-09 1988-09-14 Kazuya Hayakawa 液滴生成による空気浄化方法及び装置
DE3826684A1 (de) * 1987-12-05 1990-02-08 Erzeugnisse Schweiss Schneid Vorrichtung zum reinigen eines gases
US8128071B2 (en) * 2006-10-03 2012-03-06 Alstom Technology Ltd Method and apparatus for improved gas/fluid contact
CN112807913A (zh) * 2020-12-26 2021-05-18 界首市成铭塑业有限公司 一种基于物联网的可视化塑料造粒烟气智能处理装置

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US3113168A (en) * 1957-07-02 1963-12-03 Kinney Eng Inc S P Furnace gas cleaning and cooling apparatus
US2948351A (en) * 1958-09-22 1960-08-09 Ca Nat Research Council Foam breaking device
US3339344A (en) * 1963-10-08 1967-09-05 Waagner Biro Ag Method and apparatus for separating suspended particles from gases
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Cited By (16)

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Publication number Priority date Publication date Assignee Title
US4036609A (en) * 1971-10-18 1977-07-19 Pircon Ladislav J Endless belt impingement apparatus and method
US4744958A (en) * 1972-05-12 1988-05-17 Pircon Ladislav J Heterogeneous reactor
US4087264A (en) * 1974-02-28 1978-05-02 Riggs & Lombard, Inc. Method and apparatus for web treatment
US4209502A (en) * 1974-05-06 1980-06-24 Pircon Ladislav J Heterogeneous process
US4120670A (en) * 1975-11-17 1978-10-17 Pircon Ladislav J Pollution control apparatus and method
US4358433A (en) * 1976-04-16 1982-11-09 Pircon Ladislav J Heterogeneous process
US4229189A (en) * 1978-10-17 1980-10-21 Pircon Ladislav J Pollution control apparatus and method
US4468962A (en) * 1982-03-05 1984-09-04 Armstrong International, Inc. Energy loss detection system
US4801437A (en) * 1985-12-04 1989-01-31 Japan Oxygen Co., Ltd. Process for treating combustible exhaust gases containing silane and the like
US4952221A (en) * 1988-04-21 1990-08-28 Taikisha Ltd. Gas cleaning apparatus containing a centrifugal type paint mist separator
US5902385A (en) * 1997-06-23 1999-05-11 Skc, Inc. Swirling aerosol collector
US5904752A (en) * 1997-06-23 1999-05-18 Skc, Inc. Method for collecting airborne particles and microorganisms by their injection into a swirling air flow
US6439027B1 (en) * 2000-08-10 2002-08-27 Rupprecht & Patashnick Company, Inc. Particulate mass measurement apparatus with real-time moisture monitor
US20080063558A1 (en) * 2004-09-10 2008-03-13 Malcolm Coleman Odour Reduction Apparatus
CN102269010A (zh) * 2011-07-14 2011-12-07 江都市引江矿业设备有限公司 煤矿井下用钻孔排渣除尘器
CN107854945A (zh) * 2017-12-05 2018-03-30 中国华电科工集团有限公司 一种烟气净化系统

Also Published As

Publication number Publication date
AU4720972A (en) 1974-04-04
IE36802B1 (en) 1977-03-02
CH540711A (de) 1973-08-31
BE790079A (fr) 1973-02-01
NL7213028A (enrdf_load_stackoverflow) 1973-04-24
JPS5761443B2 (enrdf_load_stackoverflow) 1982-12-24
IL40564A0 (en) 1972-12-29
IE36802L (en) 1973-04-18
FR2183648A1 (enrdf_load_stackoverflow) 1973-12-21
DE2243957A1 (de) 1973-04-26
JPS4850360A (enrdf_load_stackoverflow) 1973-07-16
IT966356B (it) 1974-02-11
DD101819A5 (enrdf_load_stackoverflow) 1973-11-20
GB1408046A (en) 1975-10-01
FR2183648B1 (enrdf_load_stackoverflow) 1978-10-06
AR193902A1 (es) 1973-05-31

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